Memory leak in Linux kernel ceph

1) Memory leak

EUVDB-ID: #VU92889

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48767

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the restore_deleg_ino() function in fs/ceph/file.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/e7be12ca7d3947765b0d7c1c7e0537e748da993a
http://git.kernel.org/stable/c/36d433ae3242aa714176378850e6d1a5a3e78f18
http://git.kernel.org/stable/c/a0c22e970cd78b81c94691e6cb09713e8074d580
http://git.kernel.org/stable/c/932a9b5870d38b87ba0a9923c804b1af7d3605b9

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.